Mode-sensitive magnetoelastic coupling in phononic-crystal magnomechanics
arXiv:2106.07180 · doi:10.1063/5.0052150
Abstract
Acoustically driven spin-wave resonance in a phononic crystal cavity is numerically investigated. The designed cavity enables confinement of gigahertz vibrations in a wavelength-scale point-defect structure and sustains a variety of resonance modes. Inhomogeneous strain distributions in the modes modify the magnetostrictive coupling and the spin-wave excitation susceptible to an external field orientation. In particular, a monopole-like mode in the cavity having a near-symmetrical pattern shows a subwavelength-scale mode volume and can provide a versatile acoustic excitation scheme independent on field-angle variation. Thus, the phononic-crystal platform offers an alternative approach to acoustically control the spin-wave dynamics with ultrasmall and inhomogeneous mode structures, which will be a key technology to integrate and operate large-scale magnomechanical circuits.
arXiv comment5 pages, 4 figures
References in corpus (18)
- Acoustically driven ferromagnetic resonance
- Surface Acoustic Wave-Driven Ferromagnetic Resonance in Nickel Thin Films: Theory and Experiment
- Spin pumping with coherent elastic waves
- Probing spin-phonon interactions in silicon carbide with Gaussian acoustics
- Magnon Polarons in the Spin Seebeck Effect
- Design of Optomechanical Cavities and Waveguides on a Simultaneous Bandgap Phononic-Photonic Crystal Slab
- Nonreciprocal surface acoustic wave propagation via magneto-rotation coupling
- Coherent long-range transfer of angular momentum between magnon Kittel modes by phonons
- Surface acoustic wave driven ferromagnetic resonance in (Ga,Mn)(As,P) epilayers
- Phononic band structure engineering for high-Q gigahertz surface acoustic wave resonators on lithium niobate
- Large non-reciprocal propagation of surface acoustic waves in epitaxial ferromagnetic/semiconductor hybrid structures
- Voltage driven, local, and efficient excitation of nitrogen-vacancy centers in diamond
- Acoustic ferromagnetic resonance and spin pumping induced by surface acoustic waves
- Unidirectional Pumping of Phonons by Magnetization Dynamics
- Real-space characterization of cavity-coupled waveguide systems in hypersonic phononic crystals
- High Quality Factor Surface Fabry-Perot Cavity of Acoustic Waves
- Design of GaAs-based valley phononic crystals with multiple complete phononic bandgaps at ultra-high frequency
- Surface acoustic wave coupled to magnetic resonance on a multiferroic CuBO